Baby jumper



Feb. 11, 1930. o. DUNCAN BABY JUMPER Filed A ril 21,

avwentoz 0- .Dwncazo Patented Feb. 11, 1930 ISAAC O. DUNCAN, OF NASHVILLE,TEN'NESSEE BABY JUMPE Application filed April 21,

This invention relates to devices for ascertaining the weight of an infant and at the same time diverting the attention and affording a soothing influence to keep the baby in good humor, and provide for a degree of exercise which is essential to a healthy development.

Primarily considered, the invention relates to an improvement on a like device for which, on the 8th day of June 1926, I obtained Letters Patent of the United States, #1,.387 ,904. In said device considerable difficulty was ex perienced in the assembly of the frame and when assembled, separation of the parts was practically impossible. Moreover, the frame members tended to bind and spread when moving under the weight of the infant, there by detracting from the accuracy of the devlce when used as scales for indicating weight. 2 Furthermore, the tendency of the frame to spread made it difficult to maintain the scale bearing plate in position.

Therefore, the present invention aims to provide a device which is free from the objections herein noted and which admits of the frame members being readily assembled and taken apart, and moving freely without any tendency to bind, so that the scale bear ng plate, is not subjected to any strain tendlng to displacement thereof, and the accuracy of the device for indicating weight assured.

While the drawings illustrate a preferred embodiment of the invention, it is to be understood that in adapting the means to meet specific needs and requirements, the design may be varied and such other changes in the minor details of construction may be resorted to within the scope of the invention as claimed, without departing from the spirit thereof.

For a full understanding of the invention and the merits thereof, reference is to be had to the following description and the drawings hereto attached, in which Figure 1 is a front view of a baby jumper, embodying the invention, a portion of the sling or receiver being broken away.

Figure 2 is an elevational view of the frame and cooperating springs, showing the parts on a larger scale,

parallel legs which termi hate m 192 6. Serial No. T613555. V

Figure?) is a "side view of the lparts ill-ustrated in Figure 2,

Figure 4 is a fragmentary vie'vv showi'ng-the ends of the frame members in engagement -by full lines, *and separated by the dotted lines,and p p u Figure =5'1S a detail sectional view on the line 5-5 ofFi'gurefiflookiiig in the direct-ioh formation and inversely-disposed, so thzit th closed end of one is at the top and the clo sed end of'the other at the "bottom, each of the members being "substantially of enigma-u form and having their closed 'en'dseohaeeted by means of "e1osed*spira1, or, helicalspring 0. Each of the 'fraine members 1 "and 2 "is "formed of alength of Wire of-suitabl'e-i -doub1ed'upon itse1f -to provide a yoke a n'd helical hooks 5. "Each of the yok 4hasa centrally disposed eye*6 -in wh'ich -an' -end -of the spring 3 is engaged. The spiral ho s 5 at the free 'ends of the legs of orfe -n'ieiii ber loosely engage the legs of th'e' companion member, thereby admitting of the members 1 and 2 having a free sliding movement. The spiral hooks 5 face in opposite directions, as indicated most clearly in Figures 2 and 3, and as a result, corresponding legs of the frame members maintain a parallel relation at all stages of adjustment of themembers, and as a result, the frame members are adapted to move freely without any tendency to bind or spread, thereby assuring the accuracy of the device when indicating weight.

It is observed that the spiral or helical hooks 5 are open, and each consists approximately of a single turn or spiral, hence each hook completely encircles the adjacent leg of a frame member, thereby preventing displacement of the parts. The open formation of the spiral hooks 5 admits of the frame members being readily placed together and easily separated. This is indicated by the full and dotted lines in Figure 4. Upon drawing the members 1 and 2 apart, they separate readily since the hooks 5 clear each other without any manipulation other than the pulling apart of the members. The dotted lines in Figure 4 indicate one method of assembling the parts, this being effected by pressing the spiral hooks 5 of the member 2 together so as to clear the hooks of the member 1, said members being positioned so that corresponding hooks 5 are in opposition, and I upon releasing the legs of the member 2 they move outwardly and the two sets of hooks mutually interengage, as indicated by the full lines in Figure 1, and upon-pressing the members 1 and 2 together the hooks 5 of one member slide uponthe leg of thev companion member. p

. The numeral 7 des1gnates the plate bearing the scale graduations which coact with a pointer 8 carried by the frame-member 2,

whereby to indicate the weight, which is placed in a sling or receiver 9 suspended from V the lower end ofthe frame member 2. The

device is adapted to be suspended from any suitablevoverhead support 10, to which the upper end of the frame member 1 may be connected in any manner. The plate 7 may be attached to the frame member 1 in any preferred way.

Having thus described the invention, 1 claim:

In a device of the character specified, a frame comprising complemental members of approximately elongated U-form reversely disposed and slidably engaged, each of the members hav ng its legs termlnatlng n oppositely facing spirally formed hooks, the

hooks of one member extending in an opposite direction tothe corresponding hooks of the companion member, to admit of ready engagement and disengagement of the members. V

In testimony whereof I afiix my signature.

. ISAAC o. DUNCAN. a 3. 

